Skope TME ActiveCore - Removing the Unit

34
Replacement Procedures
Service Manual
SKOPE TME/SKT ActiveCore
Short of refrigerant
SKOPE recommends leak detection using high pressure dry nitrogen with pressure testing
and soap bubbles. Ensure all refrigerant is reclaimed from the system before introducing
nitrogen. Do not mix refrigerant and nitrogen to detect leaks.
Capillary restriction
After reclaiming refrigerant attempt to clear restriction with dry nitrogen. If it cannot be cleared
then it is necessary to replace suction assembly (which includes the capillary).
Compressor pumping fault
For suspected compressor fault, listen to the compressor for internal gas bypass. Fit suction
and discharge line piercing valves to prove a pumping fault.
After reclaiming refrigerant, perform compressor pump down test: Remove the system dryer
and braze the capillary entry closed. The compressor should then pump down to -100kPa and,
after being switched off, maintain this vacuum for 5 minutes.
General
• During a refrigerant service always replace filter/dryer. For a refrigerant leak fit a solid core
filter / dryer.
• Never leave the system open to atmosphere. If extended service time is required then
isolate and braze closed pipes to compressor.
Removing the
Unit
Follow the steps below to remove the refrigeration unit. Ensure the fridge is disconnected from
the power supply before removing the unit.
The unit is heavy and requires a minimum of two people to lift from the cabinet. Steps or a
platform about one metre high are suggested to allow the unit to be safely lifted, carried and
put down at waist height.
Procedure 26: To remove the refrigeration unit
1. Isolate the fridge from the power supply.
2. Remove the top sign.
3. Detach the electronic controller assembly from the top of the cabinet, and clip it onto the top of the
unit.
4. Remove electrics cover and unplug the mains supply plug and cabinet plugs.
Note: The unit plugs (plugs feeding into the unit) and electronic controller plugs (plugs feeding to the
electronic controller assembly) do not need to be unplugged.
5. Remove the sign back strip.
6. If present, remove the baffles. Note: If necessary the sign sides can also be removed.
7. Undo the two unit fixing screws (one on each side of the unit) and lift the unit off the cabinet.
8. When refitting the unit, ensure:
• The gasket on the top of the cabinet is in good condition.
• The mains and cabinet plugs are reconnected, and the mains cable is threaded through the
baffle slot.
• The electrics cover is refitted.
• The unit is re-fixed in place.