Tag Archives: Cruise-Air A/C units (H3-40)

2015/10/14 (W) Frankenmuth Friends

The forecast for today was for cloudy conditions in the morning changing to partly sunny in the afternoon with seasonally cool temperatures; a perfect fall day for our afternoon visit with Bill, Karen, Mike, and Catherine at the Jellystone Park Campground Resort in Frankenmuth, Michigan.

After our usual morning routine of feeding the cats, eating breakfast, and drinking our coffee while reading and writing, we showered and dressed for the day.  We were going to work in the bus on the installation of the desk but decided we did not have enough time and did not want to feel rushed.  We want the installation to be just right the first/only time.

I used some of the morning to continue studying the manual for the new Sony a99v DSLT camera and some of it to put the finishing touches on the FMCA Freethinkers chapter roster and e-mail it to the other officers and members of the nominating committee.  I also got a text message from Chuck inquiring about local service options for the Cruise-Air air-conditioners we have in our buses.  I replied that ours have only been serviced by Butch Williams who is five hours away in Twelve Mile, Indiana when he and Fonda are not in the desert southwest.

We left at 11:15 for Frankenmuth.  We took Linda’s car so she drove.  We stopped at the new Meijer’s in Birch Run for bottled water, grapes, and pretzels.  M-83 was down to one lane and we had a bit of a wait at the temporary traffic signal.  I called Bill to let him know we were there and he was waiting for us out by the road when we arrived at the park at 12:15 PM.

Bill and Karen Gerrie’s 1965 GMC transit bus conversion.  They estimate that it will turn 1,000,000 miles in 2015.

Bill and Karen Gerrie’s 1965 GMC transit bus conversion. They estimate that it will turn 1,000,000 miles in 2015.

Karen had found peanut butter pretzels and had a nice platter of fresh fruit that included sliced kiwi, strawberries, orange segments, and grapes.  She made tea for both of us and we settled in to chat.  Bill and I took up stations at the dinette while Linda and Karen sat on the “Chesterfield.”  We chatted away until 2:30 PM, and somewhere in there Karen made cups of hot coffee.  It was a cool day outside but warm and cozy in their rig.  Bill and Karen have a mid-60s GM transit bus that they acquired and converted in the mid-80s.  They have been coming to the Frankenmuth Jellystone Park from their home in Ontario, Canada for as long as they have had the bus.  It is 50 years old this year and Bill figures it has traveled a million miles between its commercial service and life as a motorhome.  Bill did a nice job with the conversion and it has held up very well over the years

The River Place shopping complex in Frankenmuth, Michigan.  It’s built to look like a small Bavarian village center.

The River Place shopping complex in Frankenmuth, Michigan. It’s built to look like a small Bavarian village center.

At 2:30 PM we drove over to the River Place outdoor mall and walked around”.  River Place is one of the newer developments in Frankenmuth but stayed with the “fantasy Bavarian village” theme of the town in a really nice way.  It is compact complex of buildings arranged with narrow, winding pedestrian corridors that occasionally open up into small plazas.  The façades are all faux Bavarian with the appearance of being two or three stories tall, increasing the sense of being “in” the village.

After checking out River Place, and buying a small bag of jalapeño flavored popcorn, we ambled all the way to the other end of the Main Street shopping district and back.  Along the way we stopped in lots of stores and bought a few things at the health food store that we cannot usually find locally.  The light was wonderful and I captured a few images with my old Sony a100.  I did not bring the new Sony a99v as I was not ready to use it.

This paddleboat travels a short ways up the river and back.  The cascading waterfall is man-made.  The covered bridge in the background handle automobile traffic going to the Frankenmuth Bavarian Inn on the other side of the river from Main Street.

This paddleboat travels a short ways up the river and back. The cascading waterfall is man-made. The covered bridge in the background handle automobile traffic going to the Frankenmuth Bavarian Inn on the other side of the river from Main Street.

We got back to Bill and Karen’s bus at 5:15 PM and sat for a while before going to dinner at 6 PM.  Mike and Catherine joined us for dinner and we walked next door to the Black Forest restaurant.  Our dinner choices were very limited but they had a flatbread pizza on the menu so we tried that with mushrooms and onions, hold the cheese.  The tomato sauce was surprisingly spicy and it made for a decent vegan pizza.  Our side salads were simple but the ingredients were fresh and the whole meal was quite acceptable, made better by the company of friends.

By the time we walked back to Jellystone Park it was 8 PM.  We visited with Bill and Karen until 9 PM and then took our leave.  We probably won’t see them again until the 2016 GLAMARAMA Rally in Goshen, Indiana.  We stopped at the Meijer’s in Birch Run to fill the fuel tank and were still home by 10 PM.  Although I would normally handle night driving I was sleepy so Linda drove us home.

 

 

Bill and Karen pose for their “dancing Bavarians” photo op.

Bill and Karen pose for their “dancing Bavarians” photo op.

When we entered the house we were not greeted by our two cats.  We called but they did not come.  This is unusual behavior for them and usually means they are up to something, with the odds highly in favor of something having to do with a mouse.  We found Juniper in the basement “guarding” the folded up corner of one of the throw rugs and I spotted a small, motionless mouse partially concealed by the rug.  It was dead, which is why she wasn’t carrying it around in her mouth playing keep-away with me.  Linda got a small plastic zip lock sandwich bag and I used it to pick up the mouse and seal it inside before putting it in the garbage.

Jasper was nowhere to be found.  In looking around the basement a second time Linda noticed that one of the boxes we keep on the window sills behind the sofa in the recreation room had fallen on the couch.  That was a sure sign that Jasper was up in the suspended ceiling.  He has gotten up there before via that window sill and the boxes were there to keep him from gaining access to that space.  Apparently they were not the deterrent we thought/hoped they were.  We called for him and eventually he responded verbally.  He then stuck his head around the edge of the ceiling and looked at us upside down.  He eventually decided it was safe to come down but seemed unsure of how to accomplish that.  I moved the other box on that window sill, stepped up onto the arm if the sofa, and helped him down onto the sill, into my arms, and then onto the sofa.  In some was he is just a big baby.

We had no way of determining whether he stayed up there because he wanted to or because he wasn’t sure how to get down but regardless was rather insistent on getting attention from us.  That desire for contact and comfort followed us into bed until he finally gave himself a bath and then curled up next to me to go to sleep.  I worked on this post for a while and then turned the lights out.

 

2015/01/20 (T) Buses, A-C’s, and a Get-Together

Today was another day of variety.  After our usual coffee and granola I drove over to the Quartzsite Market Place dry-camping area where the Western GM Bus Rally was still taking place.  I met with Larry and Carol Hall and spent over an hour photographing their GM PD4106 bus conversion.  It was very nicely done and they had straightened it up so that there wasn’t anything extraneous lying around inside.  Larry was also kind enough to move the bus several times to allow me to get an angle of view with a good background and lighting.  An article on this bus conversion will appear in a future issue of Bus Conversion Magazine.

Larry & Carol Hall's GM PD4106 bus conversion at the Quarzsite Market Place.

Larry & Carol Hall’s GM PD4106 bus conversion at the Quarzsite Market Place.

When I was done with the photo shoot I returned to our coach to transfer the image files from my camera to my computer, organize them, and back up them up to our NAS device.  For lunch we had tofu hotdogs wrapped in tortillas with mustard, onions, and pickle relish.  I then talked to Butch briefly about the TPMS vendor Linda and I spoke to yesterday in the “Big Tent” and discovered that we had talked to different vendors about different products.  I also let him know that I was going to work on our air-conditioners.

The three house air-conditioners (A-C) in are bus are Cruise-air split units and are initially controlled by three 12 VDC switches on the lower right dashboard.  Those switches get their power from a single 2 Amp fuse in the low voltage distribution panel.  The A-C’s did not work the last time I tried to use them (at Martin Diesel) and I found that this fuse was blown (open) so that was the place to start.

I pulled the old 2 A blade style fuse out of the distribution block and checked for voltage on the supply side and no voltage on the load side, and that is what I found.  I then checked for resistance from the load side of the fuse holder to ground with all three switches off and with each switch turned on, one at a time.  The resistance was infinite (open circuit) with all three switches off (as expected), ~45 Ohms for A-C switches 1 and 3, and ~450 ohms for A-C switch number 2.  All three switches control relays in the DS rear corner of the bus that switch on AC power from the breakers in the AC distribution panel.  Two of the switches also control the solenoid air-valve that controls the air-powered shutters for the two condenser units in the front spare tire bay.  So it was reasonable that one of the switches might show a different resistance from the other two when closed, but at this point I did not know if any of these measured values were correct or even reasonable.

I borrowed a 6 Amp auto-resettable circuit breaker from Butch and inserted it into the fuse slot.  Our testing revealed that switches 1 and 3 caused the breaker to trip but switch 2 did not, and it did not matter whether the 120 VAC power for each unit was turned on at the circuit breaker.  The evaporator units and control panels in the house, however, did not come on unless the 120 VAC power was on along with the 12 VDC corresponding dashboard switch.  That confirmed that the dashboard switches are controlling AC power relays.  I knew from previous work that those relays were in the driver’s side rear corner of the bus/bedroom but our testing indicated that they were probably not the problem.

The common element for switches 1 and 3 was the MAC solenoid air valve on the air panel in the bay under the driver’s seat.  This valve controls air-powered shutters at the front of the spare tire bay where the living room and kitchen A-C condenser/compressor units are installed.  The shutters are held closed by air pressure and held open by a spring in the absence of air pressure.  I keep the air supply valved off when we are parked to minimize air leaks and reduce how often the auxiliary air-compressor runs, but when compressed air is applied to the valve, which is ‘normally open’ when the front A-C units are off, the air pressure closes the shutters.  If either front-located A-C unit is enabled at the dashboard the MAC valve closes off the air supply and vents the pressure on the shutter actuator, allowing the spring to pull them open.

I disconnected the wires from the solenoid and confirmed which wire was the +12 VDC supply to the terminal strip.  I checked the resistance of the solenoid coil and it appeared to be shorted, so I left it disconnected.  We rechecked the A-C units and the two located in the front bay would still not turn on.  Butch figured that there was probably a limit switch on the shutters to prevent power from being applied to those two A-C’s unless the shutters were open.  I loosened the fitting at the valve to relieve the pressure and the shutters opened up.

With the shutters open and the solenoid disconnected we finally got all three A-C’s working, so we have fixed the problem for now but not permanently as the system not does function as designed.  As a side note, it appears the three control switches are incorrectly wired.  Switch 1 is the front A-C, switch 2 is the center unit, and switch 3 is the bedroom.  Switches 1 and 3 are wired to control the shutters for the spare tire bay but the compressor/condenser units for the front and middle A-C’s (1 & 2) are located there.  My guess is that this has been miswired since the coach was built.  The wiring needs to be corrected and I added it to my project list.  Until then, the “fix” is to just make sure all three switches are ‘ON’ anytime we are going to use any of the air-conditioners, ensuring that the shutters are open and the units will operate.

Camp Lieberville in Quartzsite, AZ (our coach is not shown).

Camp Lieberville in Quartzsite, AZ (our coach is not shown).

We left around 3:40 PM and drove over to the Quartzsite Yacht Club for the 4 PM RVillage get-together that founder/CEO Curtis Coleman had scheduled.  Curtis was already there with Patti (the Village Tart) as were Chris Dunphy and Cherie Ve Ard (Technomadia), Jim and Chris Guld (Geeks On Tour), and our friends Butch and Fonda Williams (MCI MC-9 NJT and W9MCI and K9MCI respectively).  Lots of other folks showed up including Forrest and Mary Clark, the first two RVillage Ambassadors.

We left a little after 6 PM and drove out to the WINs area on Plomosa Road to deliver a birthday card to Mara.  Her sister and brother-in-law were there but left shortly after we arrived so we stayed until after 8 PM visiting with Mara.  When we got back to our coach Linda heated up the leftover root vegetables for dinner.  She read while I updated my BCM article status spreadsheet, checked e-mail and RVillage, and worked on this blog post.