Carrier 19FA Betriebsanleitung PDF herunterladen (Seite 34)

HVAC Training

Page : 34 of 42

Title:

Chiller Maintenance

Lesson Plan

NMH30C000105

EO: 1. 5

Discuss the process for changing the oil filters.

Introduction

In this objective the trainee review the criteria for changing the oil filters.

Main Idea

Assess and address workplace hazards.

Verify the oil sump heater is de-energized prior to removing oil from the sump.

Oil filter change out.

Once the chiller pump down is complete, tag out the oil immersion heater and drain the oil sump. Record the oil

removed in the weekly chiller PM.

1) Normally done with system pressure at O PSIG.

a) Can be done without transferring refrigerant by closing valves 1 outlet oil cooler and check valve down stream

of oil filters holding, use care in breaching system, bleeding oil filter housing ensuring check valves is holding.

2) Removing the filter.

Loosen the filter holding clamp near the filter bottom.

b) Rotate the filter nut counter clock wise using a spanner wrench or if required drive pine and hammer, tapping

nut on flat flange to break nut loose, take care not to ding filter housing which can cause poor O-ring contact if

damaged.

c) Keep the filter body upright when removing in order to avoid oil spilling.

d) Drain oil into bucket remove filters, support tubes and spring.

Motor cooling filter change out.

1) When changing out the motor cooling line filter the refrigerant must be transferred.

2) The filters for the motor cooling line are the same as the oil filter.

Oil and Motor Cooling Filter Cartridges

1) The cartridge used with the oil filter conforms to carrier specifications.

a) Two cartridges are used for each filter.

i) The 4 - size 17 and 19FA use two cartridges in the lube oil circuit

ii) The 5 - size 17 and 19FA use four cartridges in the lube oil circuit.

2) The cartridge is made of 100% white wool or dacron pressed felt composed of 20 micron filter media and 5 micron

partial filter media.

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 40 41 42

Keine Kommentare

Carrier 19FA Betriebsanleitung Seite 34